I have two 120mm fans in front of my pc and the green light is blinking, not steady. Don't really like the blinking light. Whatever is making it blink is IN the fan itself. Does anyone know how to disable the blink so I can enjoy just a steady light???

Often the electronics are built right into the LED. If you have ever installed LEDs that change color, you know there is only the LED and perhaps a current limiting resistor. If you want to change from blinking to steady, you are going to have to change the LED. It's not too hard, but some LEDs are epoxied or are cast into the frame of the fan. Those ones are tougher. It may be easier to change the entire fan.

Electric motors work on the reverse principle of an electric generator. Basically an electric generator requires you to move a magnet around some wire. The faster you move the magnet, the more current you generate. In an electric motor, a current passes through some wire and creates a magnetic field, which opposes against some magnets, creating motion. The more current you have, the stronger the magnetic field and thus the stronger the opposition against the magnets inside.

So what does this have to do with an LED blinking? It turns out that electric motors create draws pulses of current. This is just part of the electric motor design. A smart electrical engineer would have the LEDs and motor wired parallel. A cheap electrical engineer would just wire them in series. Since there are times when there's no current drawn (because the electric motor isn't drawing current), the LED can't be turned on.

So yeah, unless you know what you're doing, it's probably better to just get another fan that doesn't have this problem.

Electric motors work on the reverse principle of an electric generator. Basically an electric generator requires you to move a magnet around some wire. The faster you move the magnet, the more current you generate. In an electric motor, a current passes through some wire and creates a magnetic field, which opposes against some magnets, creating motion. The more current you have, the stronger the magnetic field and thus the stronger the opposition against the magnets inside.

So what does this have to do with an LED blinking? It turns out that electric motors create draws pulses of current. This is just part of the electric motor design. A smart electrical engineer would have the LEDs and motor wired parallel. A cheap electrical engineer would just wire them in series. Since there are times when there's no current drawn (because the electric motor isn't drawing current), the LED can't be turned on.

So yeah, unless you know what you're doing, it's probably better to just get another fan that doesn't have this problem.

This could very well be the case, or the OP could have them attached to a Pulse Width Modulation controller, which works by cycling the electricity on and off really quick. This can also cause LEDs to blink or flash.

This could very well be the case, or the OP could have them attached to a Pulse Width Modulation controller, which works by cycling the electricity on and off really quick. This can also cause LEDs to blink or flash.

There is no PWM. I've had 3-pin case fans that did this. It's because the electric motor is causing blips of current draw.

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